asterisk users - Mar 2012 - Asterisk proces memory increase

Hello,

I notice that at the end of the day, after about 4000 calls have passed 
my Asterisk-system, that the use of memory is very high and stays that 
way untill a restart of Asterisk or a reboot of the server.

This is the situation at the end of the day :

[root at sp asterisk]# free -m
              total       used       free     shared    buffers     cached
Mem:          3923       1931       1992          0        268       1308
-/+ buffers/cache:        353       3569
Swap:         4031          0       4031

So total of 3923MB, where 1992MBis used and 1931MBstill free.

This memory never decreases and increases with every call that passes my 
Asterisk system. After some more calls :

[root at sp asterisk]# free -m
              total       used       free     shared    buffers     cached
Mem:          3923       1934       1989          0        270       1309
-/+ buffers/cache:        353       3569
Swap:         4031          0       4031

So total of 3923MB, where 1934MBis used and 1989MBstill free.

As I said, only a restart of Asterisk or reboot of the server can 
decrease this value :

[root at sp asterisk]# free -m
              total       used       free     shared    buffers     cached
Mem:          3923        974       2948          0        150        524
-/+ buffers/cache:        299       3624
Swap:         4031          0       4031

So total of 3923 MB, where 974 MB is used and 2948 MB still free.


So why does this memory usage only decrease with a restart ? What keeps 
asterisk stored in the RAM-memory ? Even if there are 0 calls, the 
memory does not decrease.



Kind regards,
Jonas

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AFAIK:
Linux has a tendency to keep RAM filled up with any recently accessed
progarm. To keep programs access fast enough, it never removes something
from the memory, only replaces it, in case some program has more frequent
access than the one already present in ram.

If your server isn't swapping.. things are okay.

On Thu, Mar 8, 2012 at 1:15 PM, Jonas Kellens <jonas.kellens at
telenet.be>wrote:
> **
> Hello,
>
> I notice that at the end of the day, after about 4000 calls have passed my
> Asterisk-system, that the use of memory is very high and stays that way
> untill a restart of Asterisk or a reboot of the server.
>
> This is the situation at the end of the day :
>
> [root at sp asterisk]# free -m
>              total       used       free     shared    buffers     cached
> Mem:          3923       1931       1992          0        268       1308
> -/+ buffers/cache:        353       3569
> Swap:         4031          0       4031
>
> So total of 3923 MB, where 1992 MB is used and 1931 MB still free.
>
> This memory never decreases and increases with every call that passes my
> Asterisk system. After some more calls :
>
> [root at sp asterisk]# free -m
>              total       used       free     shared    buffers     cached
> Mem:          3923       1934       1989          0        270       1309
> -/+ buffers/cache:        353       3569
> Swap:         4031          0       4031
>
>  So total of 3923 MB, where 1934 MB is used and 1989 MB still free.
>
> As I said, only a restart of Asterisk or reboot of the server can decrease
> this value :
>
> [root at sp asterisk]# free -m
>              total       used       free     shared    buffers     cached
> Mem:          3923        974       2948          0        150        524
> -/+ buffers/cache:        299       3624
> Swap:         4031          0       4031
>
> So total of 3923 MB, where 974 MB is used and 2948 MB still free.
>
>
> So why does this memory usage only decrease with a restart ? What keeps
> asterisk stored in the RAM-memory ? Even if there are 0 calls, the memory
> does not decrease.
>
>
>
> Kind regards,
> Jonas
>
>
> --
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